Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Rheological Properties of Si3N4 Suspension and Microstructure of Slip Cast Si3N4

Si3N4의 슬립물성과 Slip Cast Si3N4의 미세구조에 관한 연구

  • 박정현 (연세대학교 공과대학 요업공학과) ;
  • 김진숙 (연세대학교 공과대학 요업공학과) ;
  • 박한수 (홍익공전 요업과)
  • Published : 1988.06.01
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Abstract

To develope good slip and microstructure of Si3N4 the knowledge of the interaction of particles in liquid systems is required. In this work polyethyleneimines was tested as a stabilizer for Si3N4-water system. The stability of slip dispersed with polyethyleneimines was good over a wide range of pH and concentrated slips with low viscosity could be cast. This work comprises a systematic investigation including determination of electrical mobility in order to estimate the particle surface charge, determination of sedimentation rate, as well as measurements of the viscosity as a function of dispersants, pH and shear rates. The influence of deflocculation on the microstructure of slip cast Si3N4 was discussed.

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References

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